1200102010001 has 2 divisors, whose sum is σ = 1200102010002. Its totient is φ = 1200102010000.

The previous prime is 1200102009923. The next prime is 1200102010007. The reversal of 1200102010001 is 1000102010021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926521753600 + 273580256401 = 962560^2 + 523049^2 .

It is an emirp because it is prime and its reverse (1000102010021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200102010001 - 2¹⁰ = 1200102008977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200102010007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600051005000 + 600051005001.

It is an arithmetic number, because the mean of its divisors is an integer number (600051005001).

Almost surely, 2^{1200102010001} is an apocalyptic number.

It is an amenable number.

1200102010001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200102010001 is an equidigital number, since it uses as much as digits as its factorization.

1200102010001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1200102010001 its reverse (1000102010021), we get a palindrome (2200204020022).

It can be divided in two parts, 12001020 and 10001, that added together give a palindrome (12011021).

The spelling of 1200102010001 in words is "one trillion, two hundred billion, one hundred two million, ten thousand, one".